How To Fix /SAPAPO/ATP123 - Error when determining the order number for the order ID

/SAPAPO/ATP123 - Overview

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 123

• Message text: Error when determining the order number for the order ID

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/ATP123 - Error when determining the order number for the order ID ?

  The SAP error message /SAPAPO/ATP123 typically occurs in the Advanced Planning and Optimization (APO) module when there is an issue with determining the order number for a specific order ID during the Available-to-Promise (ATP) check. This error can arise due to various reasons, including data inconsistencies, configuration issues, or missing master data.
  Causes of the Error
  
  
  Missing or Incomplete Master Data: The order ID may not be linked to the necessary master data (e.g., material master, location master) required for ATP checks.
  
  
  Data Inconsistencies: There may be inconsistencies in the data related to the order, such as incorrect status or missing entries in the relevant tables.
  
  
  
  Configuration Issues: The configuration settings for ATP checks may not be set up correctly, leading to the inability to determine the order number.
  
  
  Order Status: The order may be in a status that does not allow for ATP checks or is not recognized by the system.
  
  
  System Performance Issues: Sometimes,